Career
Mamaev began playing in his home town Omsk, before moving to Germany to attend the football academy at VfB Stuttgart. After 5 years there he moved back to Russia to play with Football Club Shinnik Yaroslavl, before moving to Football Club Terek Grozny in 2008. He joined Chornomorets in September 2008 on a two and half year contract.
In March 2012 Mamaev joined the Latvian Higher League club Daugava Daugavpils.
He left in August 2012, without scoring goals in 16 matches. He then joined the Russian Second Division club Football Club Luch-Energiya Vladivostok.